Question

4. Answer the following questions.
a. Define memory. What are the two types of memory?​

Answer 1

Computer memory is of two basic type – Primary memory(RAM and ROM) and Secondary memory(hard drive,CD,etc.). Random Access Memory (RAM) is primary-volatile memory and Read Only Memory (ROM) is primary-non-volatile memory.

Answer 2

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$\bf{\red{\underline{\mathcal{MEMORY\::}}}}$

A computer system has storage areas, referred to as memory.The memory can receive, hold and deliver data when instructed to do as.

There are two types of memory :

• Primary memory/Main memory.
• Secondary Memory.

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Primary Memory consists of semi-conductor memory chips and is used to store data and programs currently in use.

Primary Memory is classified into two groups :

• RAM (Random Access Memory)
• ROM (Read Only Memory)

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RAM is read/write memory. It is a volatile memory.It stores the information as long as power is switched on.

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ROM are the memories on which it is not possible to write the data when they are on-line computer.They can only be read.ROM are non-volatile in nature and need not be loaded in a secondary storage device.

Three additional categories of non-volatile memory are used in some computer systems,

• PROM (Programmable Read Only Memory)
• EPROM (Erasable Programmable Read Only Memory)
• EEROM (Electrically Erasable Programmable Read Only memory)

$\bf{\red{\underline{\mathcal{SECONDARY\:MEMORY\::}}}}$

Secondary Memory is also known as permanent memory as we can store data on it for future use.

There are following secondary memory are :

• Magnetic tape.
• Floppy disk.
• Optical disk.
• Hard disk.